英语翻译 手工翻Diamond Everyone knows how beautiful diamonds can be. But do youknow that a diamond is the hardest substance found in nature? Dia-monds are crystals made of carbon. Scientists believe that diamondswere formed long ago when
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/16 21:32:05
英语翻译 手工翻Diamond Everyone knows how beautiful diamonds can be. But do youknow that a diamond is the hardest substance found in nature? Dia-monds are crystals made of carbon. Scientists believe that diamondswere formed long ago when
英语翻译 手工翻
Diamond
Everyone knows how beautiful diamonds can be. But do you
know that a diamond is the hardest substance found in nature? Dia-
monds are crystals made of carbon. Scientists believe that diamonds
were formed long ago when parts of the Earth were under great
pressure and heat. Diamonds are so hard that they are used to cut
many other hard materials. But a diamond can only be cut by an-
other diamond, or by a man-made material called borazon. Dia-
monds are found in just a few places in the world. Miners must dig
into the earth to remove the diamonds. Sometimes tons of earth
must be removed and crushed to find just one small diamond. Some
of the diamonds are used in industry to cut hard materials. Other di-
amonds are polished and cut to become jewels. There have been
many famous diamonds in history. The largest, found in 1905,
weighed one and one'third pounds!
不要翻译软件
英语翻译 手工翻Diamond Everyone knows how beautiful diamonds can be. But do youknow that a diamond is the hardest substance found in nature? Dia-monds are crystals made of carbon. Scientists believe that diamondswere formed long ago when
钻石
大家都知道钻石是多么的美丽,但是你知道钻石是现今自然界中能找到的最坚硬的物质吗?钻石是由化学元素碳组成的结晶体.科学家们认为,钻石是由于早期的地球运动产生的巨大的压力和高温产生的.钻石非常坚硬所以可以用它来切割其他很多坚硬的物质.但是钻石只能用其他钻石来切割,或者用一种人造的物质,叫做一氮化硼.钻石只存在世界上的几个地方,必须通过打钻井才能挖到.有时候需要挖出几吨的土,然后却只能淘到一个小的钻石.一些钻石被用以工业中,切割其他物质.另一些钻石经过打磨、切割做成首饰.世界上有很多著名的钻石.最大的钻石在1905年被发现,中1又三分之一磅.